Measurement E151M191

Experiment:	EG4
Year:	2016	Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_UL
ε_L:	0.0338
Q²:	0.0291 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.5771

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.25	42.0	0.459	0.6968
0.25	54.0	-0.1308	0.6202
0.35	42.0	0.8865	0.6911
0.35	54.0	-0.5845	0.5418
0.35	66.0	-0.3075	0.7121
0.45	30.0	-0.8167	0.6766
0.45	42.0	0.1866	0.7105
0.45	54.0	0.3047	0.6364
0.45	66.0	0.4501	0.6109
0.45	222.0	0.7664	0.7677
0.45	234.0	-0.6116	0.486
0.45	246.0	0.0117	0.5733
0.55	42.0	0.6536	0.6655
0.55	54.0	0.7305	0.6734
0.55	66.0	-0.4476	0.7729
0.55	174.0	-0.0205	0.7045
0.55	210.0	0.1607	0.6778
0.55	222.0	1.1795	0.7329
0.55	234.0	0.3338	0.533
0.55	246.0	0.7834	0.5801
0.55	258.0	-0.0572	0.5196
0.65	150.0	-0.0827	0.6621
0.65	162.0	0.476	0.8104
0.65	174.0	-1.635	0.554
0.65	186.0	-0.0105	0.7175
0.65	222.0	0.1979	0.6575
0.65	234.0	0.1933	0.5191
0.65	246.0	0.273	0.4967
0.65	258.0	0.3919	0.4687
0.75	150.0	-0.6992	0.6525
0.75	162.0	-1.3326	0.5989
0.75	174.0	-1.1757	0.6189
0.75	186.0	0.966	0.7391
0.75	222.0	0.1273	0.5974
0.75	234.0	0.2933	0.474
0.75	246.0	1.0572	0.4841
0.75	258.0	0.1729	0.5
0.85	222.0	0.0252	0.6628
0.85	234.0	-0.1422	0.4692
0.85	246.0	0.001	0.4632
0.85	258.0	-0.1941	0.4469
0.85	270.0	0.9821	0.6341

CLAS Physics Database